William r



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,dinard gister/. ff

anni domine.

wlLLiAM RoBJoI-IN,

oF New vous, N. Y.

Letters Patent No. 93,349, dated August 3, 1869.

IMPROVEMENT- IN ORG-ANS;

The Schedule referred t in these Letters Patent and making paxt of thesame.

which willenable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming apart oi'thisspecification, in which- Figure 1 represents a front view, partly insection, of my improved organ. Figure 2 is a side view, partly insection, of the same.

Figure 3 is a plan or top view oi' the same. Figure 4 is ar front viewof the tremulant pneumatic lever.

Figure 5 is a vertical transverse section of the same. Figure 6 is ahorizontal section of the same. Figure l detail horizontal section ofthe same, showing amodification inthe construction of the valve.

Figure 8 is 'a vertical sect-ion of' the compositionl-)oard, sho. wing amodification in' the eonstructioivof parts. Similar letters of referenceindicate corresponding parts;

. This invention-relates to certain improvements .on

the organ-improvemeut f orwhieh Let-ters Patent, No. 54,603, weregranted yto nie on the 8th dayiof May,

The present-invention. has for vits .object to simplify the devicesonthe composition-board'referred to in the aforesaid Letters Patent, aswell as the pneumatic lever, and to provide a reliable and practicabletremnlant pneumatic lever, and a reversible coupler for the keyboards.

-The connection between the slides which are acted .upon by the buttonsor finger-pieces and the oscillating valves of the pneumatic levers thatactuate the drawstops, is in this apparatus produced by a series ofoscillating rockers, therebyfdoing" away with the elbowcranks and theirnumerous pivots,`and 'consequently with a great amount of friction.

rlhe valves of the pneumatic levels are made oscillating, and notreciprocating, and can thereby be operated with greater ease, as theyare not vmoved against .a direct pressure of air.

The reversible coupler is so arranged that it is reversed by eveiymot-ion of a button, whatever be its position.

The tremulant'pneumatic lever which is interposed in a suitable positionbetween the wind-trunk and the pipes has its two movable side-pieces soconnected that when one side is inflated it will automatically be cutofl from the air-supply, and the other side connected with thesame,whereby reciproca-ting or other motion is imparted to the draw-stops orother devices for producing a tremulo or other vibrating action.

A A' arei the two key-boards of an organ, fitted into the frame B. 1

C, C, G2, C3, &c., are the buttons or finger-pieces for operating thepneumatic levers D.

Of' the lat-ter, but one is representedin the drawing,

although one is to be provided for and connected with every draw-stop E,by means of rods ab, or their equiv alents, as shown -in tig. l.

The buttons C, C1, G2, die., are connected, by rods c c, with slides F,F1, F", Ste., respectively, each slide having a number of projectingpins, d d.

G, G, G, &c., are a. number of transverse rockshafts, hung iu thecomposition-frame H, one for each pneumatic .lever and draw-stop.

Each rock-shaft G, G, 3&0., has as many projecting ears e e as there areslides 15",15", &c. Every slide, with the exception of' the irst.one, F,

.which sets all the draw-stops in action, isv at its outer endconuected, by means of pivoted cross-pieces f, with reverse slides I, sothat when a button is touched to push one slide out, the reverse slideconnectedwith the same will be drawn in. 11

The 'reverseslides have pins g g where their operating-slides have none,and rice versa.

Vheh a slide is pushed by its button, it will, with its' stops d, strikeoneor more of the Aears of the rockers 4 G, Gl, 85e., and will tum themto open the valves of the pneumatic levels connected with them, whileits re verse slide will actuate the remaining rockers in the oppositedirection, and will thereby reverse the valves oftheir levers.

A .s the pins in the various' slides are diiierently disposed, alldesi'red combinations can be produced by pushing the desired buttons.

The valveJ is arranged in the air-channel K, which carries the air fromthe trunk to the pneumatic levei' D, and is of conical form.

An arm, 71, on it, is, by an adjustable rod, fi, connected with a crankof the. rocker pertaining to such valve.

Then the valve is opened by the aforesaid means, the air is let into theleverfand the same has thereby one department inflated to pull thethaw-stop.

lVhen the valve is moved in the opposite direction by the action of thereverse slide, the other side of the lever isinfiated, and the draw-stopmoved in the opposite. direction The valve J, which is more fully shownin figs. 5, 6,

and 7, is, as aibremeutioncd, ot` conical form, and is .held against itsseat by a spring, j.

Itis made to work tight or loose, by means of' an adjusting-screw, I,which is either put through the valve, as in iig. 6, or through thescat, as in lig. 7,'and

which serves tohold the'valve asuitablc distance away from its seat.

The slides F, &c.', instead of being connected with reverse slides, asaforesaid, canbe slotted, as in iig. 8, to embrace the rock-shafts G, G,85o., in which case slides have pins al g', respectively, above andbelow the rock-shafts, to act. on the ears of the latter, in oppositedirect-ions, such ears projecting from both sides of the .rock-shafts,as shown.

By this arrangement, the amount of friction in operating the pneumaticlevers is still more reduced.-

Tle coupler, for connecting and disconnecting the key-boards of theorgan, is operated by a rod, which is shown by dotted lines in tig. 3,and which is connected'with a lever, an, thatjs pivoted to the frame ofthe compositiou-movement.

From the lever m. projects a wed ge-shaped bar, n., as in fig. 3. v

The reversing-button o is attached to a slide, L, which is at its backend pivoted to a pivot-ed lever, M.

A spring, q, draws the button out.

K A bar, N, is pivoted to the lever H, and is, by a spring, lr, retainedin a certain position, and still permit-ted to swing to the right a'ndleft.

'\Vhen the button o is pushed, it pushes the bar N .against the wedge n,on one side of vits point, and thereby swingsthe lever m., so as tomovethe coupler in one direction.

The spring q will, on account oi' the changed posi- A ,"ton of thewedge, come against the vopposite side of f the wedge, and will therebyreverse the position ofthe couplerx rlhus, at every motion of the buttono, the

coupler will be revelsed,

,y The pneumatic lever aboveV described is either as Vmentioned in myaforesaid Letters Patent, or it may have' its sides iixed and its middleportion movable, as indicated in iig. 1.

A pneumatic lever, 1).', for producing a tremolo, is

" shown in tig. 4.

Itisthe same as that above described, and provided with avalve, J, inits middle stem s, and with a rod, t'. Gu the face of its stock ispivoted an'ancl'ior, t,

1 which plays over an arm, u, that projects from the valve. v

A'.lhe -two movable side-plates V V of the lever are connected with eachother hy a bar, XV, as in fig. 6, so

. that when one is iniiated, the'other must be emptied,

and 'vice yversa.

The anchor is connected with a. spring, y, which tends to pull it up toeither side after ithas passed the centre.

By means of a rod, X, the anchor is connected with one side-plate V.

iVhen the V-side is inflated, it draws, by the rod X, the anchor towardit, and the anchor, during this motion, swings the arm u of the valve,thereby turning the valve and letting the air into the V'eside of thelever.

XVhenI that side is being iUHated, it draws the side V toward the middleend, and the rod X pushes the anchor, so as to swing the same andturnthe valve,

and thus the air blown through this lever produces a constant vibrationof its sides, and a consequent motion of the tremolo or other devices.

Having thus described my invention,- .l What I claim as new, and desireto secure by Letters Patent, is-

1. The rock-shafts G, G1, &c connected with the pneumatic levers, andprovided with projecting stops 'c e, so thatv they may be worked by theslides F, 1.1,

&c., substantially as herein shown and described. .v.. The slides F1,F2, Sac., for` operatingthe pneu#l matic levers, when connected with4the reverse slides I I, substantially as and for the purpose hereinshown 'and described.

3. rlhe slides E11", 85e., when slotted and provided with two sets ofpins, d' g, to operate directly the pneumatic levers,substantially. asherein shown and described.

4. The valve J of the pneumatic'lever, when held i against its seat by aspring, 7', and when adjustable on the seat by the screw '1,substantially as aud for the purpose herein'shown and described.

5. The reversible coupler, consisting of the-lever fm,

'wedge n," slide L, lever M, and bar-N, all combined Aand operatingsubstantially as and for the purpose herein shown and described.

(i. The tremolo pneumatic lever D', provided with the anchor t, rod X,spring y, and a-rm u, on the valve, all arranged and operatingvsubstantially as herein.

shown and described.

WILLIAM ROBJOHN.

Witnesses:

FRANK BLocKLnY, ALEX. F. Ronnn'rs.

